Signed integer types

A fixed-precision integer type with at least the range [-2^29 .. 2^29-1].
The exact range for a given implementation can be determined by using
Prelude.minBound and Prelude.maxBound from the Prelude.Bounded class.

Notes

All arithmetic is performed modulo 2^n, where n is the number of
bits in the type.

For coercing between any two integer types, use Prelude.fromIntegral,
which is specialized for all the common cases so should be fast
enough. Coercing word types (see Data.Word) to and from integer
types preserves representation, not sign.

The rules that hold for Prelude.Enum instances over a
bounded type such as Int (see the section of the
Haskell report dealing with arithmetic sequences) also hold for the
Prelude.Enum instances over the various
Int types defined here.

Right and left shifts by amounts greater than or equal to the width
of the type result in either zero or -1, depending on the sign of
the value being shifted. This is contrary to the behaviour in C,
which is undefined; a common interpretation is to truncate the shift
count to the width of the type, for example 1 << 32
== 1 in some C implementations.